EP 0930343 A2 19990721 - Low profile additives for crosslink resins
Title (en)
Low profile additives for crosslink resins
Title (de)
Schrumpfarme Additive für vernetzbare Harze
Title (fr)
Additives à faible retract pou résins réticulables
Publication
Application
Priority
US 867698 A 19980116
Abstract (en)
Shrinkage of cured resins is reduced by mixing the crosslinkable resin with a low profile additive (LPA). The LPA is in the form of particles which comprise an SCC polymer (or a similar crystalline polymer which melts over a narrow temperature range). The system is cured at a temperature above the melting point of the crystalline polymer (Tp), and the system and the LPA are such that at least part of the LPA remains as a separate phase in the curable resin at temperatures below Tp. It is believed that at least part of the crystalline polymer remains as a separate phase in the resin as it cures. Preferably at least part of the crystalline polymer forms a separate phase in the cured polymer after it has cooled. <IMAGE>
IPC 1-7
IPC 8 full level
C08F 4/06 (2006.01); C08L 101/00 (2006.01)
CPC (source: EP US)
C08L 101/00 (2013.01 - EP US)
Designated contracting state (EPC)
CH DE GB IT LI
DOCDB simple family (publication)
EP 0930343 A2 19990721; EP 0930343 A3 20000531; JP H11256043 A 19990921; US 2002038922 A1 20020404; US 6544453 B2 20030408
DOCDB simple family (application)
EP 99300322 A 19990118; JP 991599 A 19990118; US 73443400 A 20001211